What's this ? (remote serial protocol)

[Juha Aaltonen]

I didn't understand...

Sending packet:
$qOffsets#4b...[\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][
r +]Ack
[$][#][0][0]Packet received:
[
w \x00]PC register is not available

What does PC have to do with qOffsets?

Especially when
w \x00]Sending packet: $pf#d6...[\x00][\x00][\x00][\x00][\x00][\x00][
r +]Ack
[$][0][0][0][0][0][f][e][1][#][e][c]Packet received: 00000fe1

and the target is ARM (PC = r15).